Datasheet > HTC750DC

HTC750DC

更新时间： 2024-01-05 12:31:29

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
6页	152K
描述
Melody Generator

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技术参数
数据手册

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HTC750DC 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.7
Base Number Matches：	1

HTC750DC 数据手册

HIGH TECH

CHIPS, INC.

Melody Generator

1.0 General description.

This circuit is designed to work as melody generator. HTC750 will play selected melody (selection is

done by driving D0 and D1 inputs to low or high value) and once melody is finished it will enter power

saving mode which we call Sleep mode. In Sleep mode HTC750 consumes less then few microamps

of current. One of possible uses of HTC750 is designing it in doorbell. This device was designed

using our proprietary melody storing scheme to optimize

PDIP, SOIC

internal memory usage. HTC750 can play up to four melodies.

It can directly drive piezo-electrical sound source or with use of

VDD

GND

MOUT

CNTL

external amplifier can drive speakers. Control output is

provided to control external relay or power switch. This output

goes high for duration of melody and could be used to control

the power to HTC750 and amplifier for duration of melody.

HTC750XXX

Possible uses are:

• Musical doorbell.

• Melody generator for alarm clock.

• Musical toys.

• Musical boxes for gifts, accessories or jewelry.

Features:

• Single chip solution.

• Minimum external components.

• Four selectable melodies.

• Minimum power consumption while in SLEEP mode.

Doorbell design using HTC750

0.1uF

100K

VDD

MOUT

CNTL

GND

NPN

BT1

HTC750

4.5V

47uF

LS1

PNP

8ohm

04/30/00

12 3 4 5 6

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